Systems Engineering and Electronics ›› 2022, Vol. 44 ›› Issue (7): 2270-2275.doi: 10.12305/j.issn.1001-506X.2022.07.23

• Guidance, Navigation and Control • Previous Articles     Next Articles

Optimal front-end gain of anti-jamming satellite navigation receiver

Zukun LU*, Haiyu GUO, Jie SONG, Yifan SUN, Baiyu LI   

  1. College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
  • Received:2021-07-03 Online:2022-06-22 Published:2022-06-28
  • Contact: Zukun LU

Abstract:

Based on the contradiction between the anti-interference ability caused by the radio frequency (RF) front-end gain of global navigation satellite system (GNSS) receiver and the quantization loss of analog-to-digital converter (ADC), an optimal front-end gain design method under the constraint of anti-interference performance is proposed. Firstly, the mathematical models of RF channel and ADC are established. Then, the influence of front-end gain on signal sampling without interference and the anti-interference limit performance under interference are analyzed. Finally, aiming at the contradiction between the front-end gain on signal reception and anti-interference performance, taking the anti-interference performance as the optimization goal, an optimal front-end gain design method is proposed. The simulation results verify the accuracy of the analysis conclusions and the effectiveness of the proposed method.

Key words: global navigation satellite system (GNSS) receiver, anti-jamming, low noise amplifier, front-end gain, carrier-to-noise ratio loss, quantization error

CLC Number: 

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